1225470518 has 4 divisors (see below), whose sum is σ = 1838205780. Its totient is φ = 612735258.

The previous prime is 1225470509. The next prime is 1225470523. The reversal of 1225470518 is 8150745221.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 306367628 + ... + 306367631.

It is an arithmetic number, because the mean of its divisors is an integer number (459551445).

Almost surely, 2^1225470518 is an apocalyptic number.

1225470518 is a deficient number, since it is larger than the sum of its proper divisors (612735262).

1225470518 is an equidigital number, since it uses as much as digits as its factorization.

1225470518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 612735261.

The product of its (nonzero) digits is 22400, while the sum is 35.

The square root of 1225470518 is about 35006.7210403945. The cubic root of 1225470518 is about 1070.1244557829.

The spelling of 1225470518 in words is "one billion, two hundred twenty-five million, four hundred seventy thousand, five hundred eighteen".